There is no way the crankshaft of the compound reciprocating steam engines on Titanic could be damaged. They were massively built with bearings between each crank and at each end. The idea that a piston rod would flex and jam the pistons is just silly. The piston rod is very accurately guided by the crosshead in the slidebars. The piston rod cannot do anything but go up and down perfectly guided.
Glancing through the newspapers I discovered that defects were found in the Olympic's crankshaft in 1932. Not sure if they were caused by age, or if the liner was put through too much stress e.g an emergency stop. Here are news reports (with emphasis on the damage).
OLYMPIC SAILING CANCELLED
Passengers Offered Accommodation on the Georgic. The White Star Line announced yesterday afternoon that the usual examination of the engine room of the Olympic, after she arrived at Southampton from New York on Friday last, revealed that a small fracture was discovered......
Owing to an engine defect the sailing of the White Star liner Olympic from Southampton to New York today was cancelled. A small fracture has developed in one of the journals of a crankshaft. It will be repaired in time for her next voyage.....
OLYMPIC'S DEFECTS CONFERENCE WITH SHIPBUILDERS
The White Star Line has issued the following statement regarding the liner Olympic, at present docked in Southampton: There will be a conference on Tuesday at the head offices of the White Star Line......
THE OLYMPIC’S ENGINE TROUBLE
The conference lasted several hours, and at its close the following statement was issued;— “The White Star Line announces the Royal Mail steamship Olympic is to undergo a complete overhaul".....
OLYMPIC TO UNDERGO THREE MONTH OVERHAUL
An order has been placed with Messrs Harland and Wolff for a new propeller shaft for the White Star liner Olympic which is to undergo three months overhaul.....
The following year the Olympic continued to have problems with her engines.
LINER 12 HOURS LATE - OLYMPIC DEVELOPS ENGINE TROUBLE
The White Star liner Olympic reached Plymouth today from New York, 12 hours late owing to engine trouble. Three days ago a defect in a turbine put one of her three propellers out of action and reduced her speed....
OLYMPIC TWELVE HOURS LATE - TROUBLE IN TURBINE
The White Star liner Olympic reached Plymouth yesterday from New York twelve hours late owing to engine trouble.
Last edited by a moderator: